Passing Dynamic Data to Color Node

[mqualls]

I am attempting to dynamically populate the color nodes as in the following code:

<colorRange>
 <color minValue='0' maxValue='<?php echo $targetMins; ?>' name='Bad' code='FF0000' />
 <color minValue='<?php echo $targetMins; ?>' maxValue='5000' name='Good' code='00FF00' />
</colorRange>

^^^This does not work ... the color from the second color node overrwrites the color from the first color node ... Do any of you have an idea of why this would not work?

If I hard code the values it works; such as:

<colorRange>
 <color minValue='0' maxValue='4000' name='Bad' code='FF0000' />
 <color minValue='4000' maxValue='5000' name='Good' code='00FF00' />
</colorRange>

Let me assure you, also, that the variables that I am echoing to the color nodes do contain values; this was the first thing that I verified.  However, no matter what I have tried, short of hard coding the values, has not worked.

 

Any help on this issue would be very much appreciated.